
\onecolumn
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        \textbf{Math\textit{\textcolor{DodgerBlue2}{P}}robs}};
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      \textcolor{DarkSlateGray1}{\textbf{-- \texttt{003F}}}};
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      \begin{minipage}{10cm}
        \fontsize{10pt}{10pt}\selectfont \textcolor{Azure1}
        {Copyright \copyright\ 2024 \\
          \textbf{Liu One} \\ \emph{All rights reserved.}}
      \end{minipage} };
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    \draw (2,4) node {\Huge\textcolor{RoyalBlue1}{\textbf{VOL.}}};
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    \draw (10,8) node {
      \begin{minipage}{3cm}
        \footnotesize \textit{
        \raggedright Heron公式 \\
        $S^2 = p(p - a)(p - b)(p - c),$ \\
        $p = \sfrac{a + b + c}2$ \\
        \raggedleft ——简洁的对称美 \\ }
      \end{minipage} };
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      \coordinate[label=above left:$A$] (A) at (\Ax,\Ay);
      \coordinate[label=above right:$B$] (B) at (\Bx,\By);
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      \coordinate (Dbisector) at
        ({\calcbisectorx\Bx\By\Ax\Ay\Cx\Cy},
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        coordinate[label=above right:$O$] (O) at (intersection-1);
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      \coordinate[label=below:$F$] (F) at ($ (A)!(O)!(B) $);
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        coordinate[label=below right:$N$] (N) at (intersection-1);
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        coordinate[label=below right:$L$] (L) at (intersection-1);
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        -- node[above] {$y - h$} (B) -- node[right] {$y$} (D)
        -- node[right] {$z$} (C) -- node[above] {$z$} (E)
        -- node[above] {$x$} cycle;
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        {\draw[dashed] (O) -- node[\labelpos] {$r$} (\dot);}
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        at ($ (A)!1/2!(N) $) {};
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        (C) -- (E) -- (O) -- cycle;
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\end{inctext}
\twocolumn
